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   1  <?php
   2  /**
   3   * Feed API: WP_SimplePie_File class
   4   *
   5   * @package WordPress
   6   * @subpackage Feed
   7   * @since 4.7.0
   8   */
   9  
  10  /**
  11   * Core class for fetching remote files and reading local files with SimplePie.
  12   *
  13   * This uses Core's HTTP API to make requests, which gives plugins the ability
  14   * to hook into the process.
  15   *
  16   * @since 2.8.0
  17   */
  18  #[AllowDynamicProperties]
  19  class WP_SimplePie_File extends SimplePie\File {
  20  
  21      /**
  22       * Timeout.
  23       *
  24       * @var int How long the connection should stay open in seconds.
  25       */
  26      public $timeout = 10;
  27  
  28      /**
  29       * Constructor.
  30       *
  31       * @since 2.8.0
  32       * @since 3.2.0 Updated to use a PHP5 constructor.
  33       * @since 5.6.1 Multiple headers are concatenated into a comma-separated string,
  34       *              rather than remaining an array.
  35       *
  36       * @param string       $url             Remote file URL.
  37       * @param int          $timeout         Optional. How long the connection should stay open in seconds.
  38       *                                      Default 10.
  39       * @param int          $redirects       Optional. The number of allowed redirects. Default 5.
  40       * @param string|array $headers         Optional. Array or string of headers to send with the request.
  41       *                                      Default null.
  42       * @param string       $useragent       Optional. User-agent value sent. Default null.
  43       * @param bool         $force_fsockopen Optional. Whether to force opening internet or unix domain socket
  44       *                                      connection or not. Default false.
  45       */
  46  	public function __construct( $url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false ) {
  47          $this->url       = $url;
  48          $this->timeout   = $timeout;
  49          $this->redirects = $redirects;
  50          $this->headers   = $headers;
  51          $this->useragent = $useragent;
  52  
  53          $this->method = SimplePie\SimplePie::FILE_SOURCE_REMOTE;
  54  
  55          if ( preg_match( '/^http(s)?:\/\//i', $url ) ) {
  56              $args = array(
  57                  'timeout'     => $this->timeout,
  58                  'redirection' => $this->redirects,
  59              );
  60  
  61              if ( ! empty( $this->headers ) ) {
  62                  $args['headers'] = $this->headers;
  63              }
  64  
  65              if ( SimplePie\Misc::get_default_useragent() !== $this->useragent ) { // Use default WP user agent unless custom has been specified.
  66                  $args['user-agent'] = $this->useragent;
  67              }
  68  
  69              $res = wp_safe_remote_request( $url, $args );
  70  
  71              if ( is_wp_error( $res ) ) {
  72                  $this->error   = 'WP HTTP Error: ' . $res->get_error_message();
  73                  $this->success = false;
  74  
  75              } else {
  76                  $this->headers = wp_remote_retrieve_headers( $res );
  77  
  78                  /*
  79                   * SimplePie expects multiple headers to be stored as a comma-separated string,
  80                   * but `wp_remote_retrieve_headers()` returns them as an array, so they need
  81                   * to be converted.
  82                   *
  83                   * The only exception to that is the `content-type` header, which should ignore
  84                   * any previous values and only use the last one.
  85                   *
  86                   * @see SimplePie\HTTP\Parser::new_line().
  87                   */
  88                  foreach ( $this->headers as $name => $value ) {
  89                      if ( ! is_array( $value ) ) {
  90                          continue;
  91                      }
  92  
  93                      if ( 'content-type' === $name ) {
  94                          $this->headers[ $name ] = array_pop( $value );
  95                      } else {
  96                          $this->headers[ $name ] = implode( ', ', $value );
  97                      }
  98                  }
  99  
 100                  $this->body        = wp_remote_retrieve_body( $res );
 101                  $this->status_code = wp_remote_retrieve_response_code( $res );
 102              }
 103          } else {
 104              $this->error   = '';
 105              $this->success = false;
 106          }
 107      }
 108  }